New Post: GetValueOrDefault with nullable DateTime Stored Procedure parameters

sb.AppendFormat(
    isNullable
        ? "            if (!{0}.HasValue){1}                {0}Param.Value = DBNull.Value;{1}{1}"
        : "            if ({0}Param.Value == null){1}                {0}Param.Value = DBNull.Value;{1}{1}",
    p.NameHumanCase, Environment.NewLine);

var beginningDateParam = new SqlParameter 
{
    ParameterName = "@Beginning_Date",
    SqlDbType = SqlDbType.DateTime, 
    Direction = ParameterDirection.Input,
    Value = beginningDate.GetValueOrDefault() 
};
if (!beginningDate.HasValue)
    beginningDateParam.Value = DBNull.Value;